BOOL GetFormatDescription ( LPWAVEFORMATEX pwformat, LPTSTR pszFormatTag, LPTSTR pszFormat)
{
MMRESULT mmr;
// Retrieve the descriptive name for the FormatTag in pwformat.
if (NULL != pszFormatTag) {
ACMFORMATTAGDETAILS aftd;
memset(&aftd, 0, sizeof(aftd));
// Fill in the required members FormatTAG query.
aftd.cbStruct = sizeof(aftd);
aftd.dwFormatTag = pwformat->wFormatTag;
// Ask ACM to find first available driver that supports the specified Format tag.
mmr = acmFormatTagDetails(NULL, &aftd,
ACM_FORMATTAGDETAILSF_FORMATTAG);
if (MMSYSERR_NOERROR != mmr) {
return (FALSE);
}
// Copy the Format tag name into the calling application's
// buffer.
lstrcpy(pszFormatTag, aftd.szFormatTag);
}
CString formatstr;
CString str_samples_per_second;
CString str_bits_per_sample;
CString str_avg_bytes_per_second;
CString str_nchannels;
str_samples_per_second.Format("%d Hz",pwformat->nSamplesPerSec);
str_bits_per_sample.Format("%d Bit",pwformat->wBitsPerSample);
str_avg_bytes_per_second.Format("%d Bytes/sec",pwformat->nAvgBytesPerSec);
if (pwformat->nChannels==1)
str_nchannels.Format("Mono");
else
str_nchannels.Format("Stereo");
formatstr = str_samples_per_second + ", ";
if ((pwformat->wBitsPerSample)>0) formatstr = formatstr + str_bits_per_sample + ", ";
formatstr = formatstr + str_nchannels + " " + str_avg_bytes_per_second;
lstrcpy(pszFormat, LPCTSTR(formatstr));
return (TRUE);
}
BOOL CALLBACK acmDriverEnumCallback( HACMDRIVERID hadid, DWORD dwInstance, DWORD fdwSupport ){
MMRESULT mmr;
HACMDRIVER driver;
int i;
ACMDRIVERDETAILS details;
details.cbStruct = sizeof(ACMDRIVERDETAILS);
mmr = acmDriverDetails( hadid, &details, 0 );
mmr = acmDriverOpen( &driver, hadid, 0 );
for(i = 0; i < details.cFormatTags; i++ ){
ACMFORMATTAGDETAILS fmtDetails;
ZeroMemory( &fmtDetails, sizeof(fmtDetails) );
fmtDetails.cbStruct = sizeof(ACMFORMATTAGDETAILS);
fmtDetails.dwFormatTagIndex = i;
mmr = acmFormatTagDetails( driver, &fmtDetails, ACM_FORMATTAGDETAILSF_INDEX );
if( fdwSupport & ACMDRIVERDETAILS_SUPPORTF_CODEC ) {
/* fprintf(stderr, "supported codec: %s\n" ,details.szLongName ); */
if( fmtDetails.dwFormatTag == WAVE_FORMAT_MSG723 )
{
g_g723Drivers = /* 1 */ 0;
/* ! fprintf(stderr, "Find Codec %s\n" ,details.szLongName ); */
#if 0
fprintf(stderr, "G723 cFormatTags %i\n" ,details.cFormatTags );
fprintf(stderr, "G723 cFilterTags %i\n" ,details.cFilterTags);
#endif
return -1;
}
else if( fmtDetails.dwFormatTag == WAVE_FORMAT_GSM610 )
{
g_gsmDrivers = 1;
/* ! fprintf(stderr, "Find Codec %s\n" ,details.szLongName ); */
return -1;
}
}
else
{
/* ! fprintf(stderr, "Unsupported codec: %s\n" ,details.szLongName ); */
}
}
mmr = acmDriverClose( driver, 0 );
return -1;
}
CACMWaveFormat::CACMWaveFormat(WORD fmt, DWORD sz)
{
MMRESULT mmr;
m_fmt = NULL;
m_size = 0;
if (0 == sz)
{
CACMStruct<ACMFORMATTAGDETAILS> tagD;
// WIN95 bug keeps us from using the correct fmt here,
// because acmFormatEnum fails later if not
tagD->dwFormatTag = WAVE_FORMAT_UNKNOWN;
mmr = acmFormatTagDetails(NULL,
tagD,
ACM_FORMATTAGDETAILSF_LARGESTSIZE
);
if (0 != mmr)
raiseError(mmr,
"Error getting format descriptor size");
sz = tagD->cbFormatSize;
}
m_fmt = (LPWAVEFORMATEX)
GlobalAlloc(GMEM_FIXED|GMEM_ZEROINIT, sz);
if (m_fmt)
{
m_fmt->wFormatTag = fmt;
m_size = sz;
}
else
{
raiseError(MMSYSERR_NOMEM,
"No memory for wave format descriptor");
}
}
void ConvertNode(HWND hwnd, AFile* node, const char* fname, WORD tag)
{
FSHandle* file;
HANDLE wavfile;
RIFFHeader riffhdr;
ChunkHeader chunkhdr;
DWORD riffsize,factsize,datasize,written,rate,buffpos,pcmsize,dstsize,sizeToFill,sizeFilled;
DWORD pos_riffsize,pos_factsize,pos_datasize;
WORD channels,bits;
char str[MAX_PATH+100],*pcmBuffer=NULL,*dstBuffer=NULL;
LPWAVEFORMATEX pwfex;
ACMFORMATTAGDETAILS aftd={0};
MMRESULT mmr;
WAVEFORMATEX wfexPCM;
HACMSTREAM hACMStream;
ACMSTREAMHEADER acmshdr;
if ((file=FSOpenForPlayback(hwnd,node,&rate,&channels,&bits))==NULL)
return;
wfexPCM.wFormatTag=WAVE_FORMAT_PCM;
wfexPCM.nChannels=channels;
wfexPCM.nSamplesPerSec=rate;
wfexPCM.wBitsPerSample=bits;
wfexPCM.cbSize=0;
wfexPCM.nBlockAlign=channels*(bits/8);
wfexPCM.nAvgBytesPerSec=rate*wfexPCM.nBlockAlign;
switch (tag)
{
case WAVE_FORMAT_PCM:
pwfex=NULL; // ???
hACMStream=NULL;
dstBuffer=NULL; // ???
pcmBuffer=(char*)GlobalAlloc(GPTR,BUFFERSIZE);
break;
default:
aftd.cbStruct=sizeof(aftd);
aftd.dwFormatTag=tag;
mmr=acmFormatTagDetails(NULL,&aftd,ACM_FORMATTAGDETAILSF_LARGESTSIZE);
if (mmr!=MMSYSERR_NOERROR)
{
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
wsprintf(str,"Failed to get details for wave format tag: 0x%X",tag);
ReportMMError(hwnd,mmr,str);
return;
}
pwfex=(LPWAVEFORMATEX)LocalAlloc(LPTR,aftd.cbFormatSize);
pwfex->wFormatTag=tag;
mmr=acmFormatSuggest(NULL,&wfexPCM,pwfex,aftd.cbFormatSize,ACM_FORMATSUGGESTF_WFORMATTAG);
if (mmr!=MMSYSERR_NOERROR)
{
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
wsprintf(str,"No format suggested for wave format tag: 0x%X",tag);
ReportMMError(hwnd,mmr,str);
return;
}
mmr=acmStreamOpen(&hACMStream,NULL,&wfexPCM,pwfex,NULL,0,0,ACM_STREAMOPENF_NONREALTIME);
if (mmr!=MMSYSERR_NOERROR)
{
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
wsprintf(str,"Failed to open conversion stream for wave format tag: 0x%X",tag);
ReportMMError(hwnd,mmr,str);
return;
}
if (acmStreamSize(hACMStream,BUFFERSIZE,&dstsize,ACM_STREAMSIZEF_SOURCE)!=MMSYSERR_NOERROR)
dstsize=BUFFERSIZE;
pcmBuffer=(char*)GlobalAlloc(GPTR,BUFFERSIZE);
dstBuffer=(char*)GlobalAlloc(GPTR,dstsize);
memset(&acmshdr,0x00,sizeof(acmshdr)); // ???
acmshdr.cbStruct=sizeof(ACMSTREAMHEADER);
acmshdr.fdwStatus=0;
acmshdr.pbSrc=pcmBuffer;
acmshdr.cbSrcLength=BUFFERSIZE;
acmshdr.cbSrcLengthUsed=0;
acmshdr.pbDst=dstBuffer;
acmshdr.cbDstLength=dstsize;
acmshdr.cbDstLengthUsed=0;
mmr=acmStreamPrepareHeader(hACMStream,&acmshdr,0L);
if (mmr!=MMSYSERR_NOERROR)
{
GlobalFree(dstBuffer);
GlobalFree(pcmBuffer);
acmStreamClose(hACMStream,0);
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
ReportMMError(hwnd,mmr,"Failed to prepare conversion stream header.");
return;
}
acmshdr.cbSrcLength=0;
}
if (!EnsureDirPresence(fname))
{
if (hACMStream!=NULL)
{
acmStreamUnprepareHeader(hACMStream,&acmshdr,0L);
acmStreamClose(hACMStream,0);
}
GlobalFree(dstBuffer);
GlobalFree(pcmBuffer);
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
return;
}
wavfile=CreateFile(fname,
GENERIC_WRITE,
FILE_SHARE_READ,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL
);
if (wavfile==INVALID_HANDLE_VALUE)
{
if (hACMStream!=NULL)
{
acmStreamUnprepareHeader(hACMStream,&acmshdr,0L);
acmStreamClose(hACMStream,0);
}
GlobalFree(dstBuffer);
GlobalFree(pcmBuffer);
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
wsprintf(str,"Cannot open WAV file: %s",fname);
ReportError(hwnd,str,NULL);
return;
}
ShowProgressHeaderMsg(fname);
datasize=0;
factsize=0;
ShowProgressStateMsg("Writing RIFF header...");
SetFilePointer(wavfile,0,NULL,FILE_BEGIN);
lstrcpy(riffhdr.riffid,IDSTR_RIFF);
lstrcpy(riffhdr.rifftype,IDSTR_WAVE);
riffhdr.riffsize=0;
WriteFile(wavfile,&riffhdr,sizeof(RIFFHeader),&written,NULL);
pos_riffsize=SetFilePointer(wavfile,0,NULL,FILE_CURRENT)-sizeof(riffhdr.rifftype)-sizeof(riffhdr.riffsize);
CorrectOddPos(wavfile);
ShowProgressStateMsg("Writing fmt chunk...");
lstrcpy(chunkhdr.id,IDSTR_fmt);
switch (tag)
{
case WAVE_FORMAT_PCM:
chunkhdr.size=sizeof(wfexPCM);
WriteFile(wavfile,&chunkhdr,sizeof(chunkhdr),&written,NULL);
WriteFile(wavfile,&wfexPCM,chunkhdr.size,&written,NULL);
CorrectOddPos(wavfile);
break;
default:
chunkhdr.size=aftd.cbFormatSize;
WriteFile(wavfile,&chunkhdr,sizeof(chunkhdr),&written,NULL);
WriteFile(wavfile,pwfex,chunkhdr.size,&written,NULL);
CorrectOddPos(wavfile);
lstrcpy(chunkhdr.id,IDSTR_fact);
chunkhdr.size=sizeof(factsize);
WriteFile(wavfile,&chunkhdr,sizeof(chunkhdr),&written,NULL);
pos_factsize=SetFilePointer(wavfile,0,NULL,FILE_CURRENT);
WriteFile(wavfile,&factsize,sizeof(factsize),&written,NULL);
CorrectOddPos(wavfile);
}
lstrcpy(chunkhdr.id,IDSTR_data);
chunkhdr.size=datasize;
WriteFile(wavfile,&chunkhdr,sizeof(chunkhdr),&written,NULL);
pos_datasize=SetFilePointer(wavfile,0,NULL,FILE_CURRENT)-sizeof(datasize);
while (1)
{
if (IsCancelled())
break;
switch (tag)
{
case WAVE_FORMAT_PCM:
sizeToFill=BUFFERSIZE;
sizeFilled=0;
break;
default:
if (acmshdr.cbSrcLengthUsed!=0L)
{
memmove(pcmBuffer,pcmBuffer+acmshdr.cbSrcLengthUsed,acmshdr.cbSrcLength-acmshdr.cbSrcLengthUsed);
acmshdr.cbSrcLength-=acmshdr.cbSrcLengthUsed;
}
if (acmshdr.cbSrcLength<BUFFERSIZE)
sizeToFill=BUFFERSIZE-acmshdr.cbSrcLength;
sizeFilled=acmshdr.cbSrcLength;
}
wsprintf(str,"Converting %s data block to PCM...",file->node->afID);
ShowProgressStateMsg(str);
pcmsize=0;
if (sizeToFill>0)
pcmsize=AFPLUGIN(node)->FillPCMBuffer(file,pcmBuffer+sizeFilled,sizeToFill,&buffpos);
if (tag==WAVE_FORMAT_PCM)
{
if (pcmsize==0L)
break;
ShowProgressStateMsg("Writing WAV data block...");
WriteFile(wavfile,pcmBuffer,pcmsize,&written,NULL);
if (written!=pcmsize)
{
ReportError(hwnd,"Failure writing WAV file.",NULL);
SetCancelFlag();
break;
}
datasize+=written;
}
else
{
acmshdr.cbSrcLength+=pcmsize;
if (acmshdr.cbSrcLength==0L)
break;
acmshdr.fdwStatus^=ACMSTREAMHEADER_STATUSF_DONE;
acmshdr.cbSrcLengthUsed=0;
acmshdr.cbDstLength=dstsize;
acmshdr.cbDstLengthUsed=0;
wsprintf(str,"Compressing PCM data block...");
ShowProgressStateMsg(str);
mmr=acmStreamConvert(hACMStream,&acmshdr,ACM_STREAMCONVERTF_BLOCKALIGN);
if (mmr!=MMSYSERR_NOERROR)
{
CloseHandle(wavfile);
DeleteFile(fname);
acmStreamUnprepareHeader(hACMStream,&acmshdr,0L);
acmStreamClose(hACMStream,0);
GlobalFree(dstBuffer);
GlobalFree(pcmBuffer);
LocalFree(pwfex);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
ReportMMError(hwnd,mmr,"Error during compression.");
return;
}
if (acmshdr.cbSrcLengthUsed==0L)
{
acmshdr.fdwStatus^=ACMSTREAMHEADER_STATUSF_DONE;
acmStreamConvert(hACMStream,&acmshdr,0L);
}
factsize+=acmshdr.cbSrcLengthUsed/wfexPCM.nBlockAlign;
ShowProgressStateMsg("Writing WAV data block...");
WriteFile(wavfile,dstBuffer,acmshdr.cbDstLengthUsed,&written,NULL);
if (written!=acmshdr.cbDstLengthUsed)
{
ReportError(hwnd,"Failure writing WAV file.",NULL);
SetCancelFlag();
break;
}
datasize+=written;
}
ShowProgress(FSGetFilePointer(file),FSGetFileSize(file)); // ???
}
if (IsCancelled())
{
ShowProgressStateMsg("Deleting WAV file...");
CloseHandle(wavfile);
DeleteFile(fname);
}
else
{
CorrectOddPos(wavfile);
ShowProgressStateMsg("Rewriting WAV header...");
riffsize=GetFileSize(wavfile,NULL)-8;
SetFilePointer(wavfile,pos_riffsize,NULL,FILE_BEGIN);
WriteFile(wavfile,&riffsize,sizeof(riffsize),&written,NULL);
if (tag!=WAVE_FORMAT_PCM)
{
SetFilePointer(wavfile,pos_factsize,NULL,FILE_BEGIN);
WriteFile(wavfile,&factsize,sizeof(factsize),&written,NULL);
}
SetFilePointer(wavfile,pos_datasize,NULL,FILE_BEGIN);
WriteFile(wavfile,&datasize,sizeof(datasize),&written,NULL);
CloseHandle(wavfile);
}
if (hACMStream!=NULL)
{
ShowProgressStateMsg("Closing conversion stream...");
acmStreamUnprepareHeader(hACMStream,&acmshdr,0L);
acmStreamClose(hACMStream,0);
}
ShowProgressStateMsg("Freeing conversion buffers...");
GlobalFree(dstBuffer);
GlobalFree(pcmBuffer);
LocalFree(pwfex);
wsprintf(str,"Shutting down %s decoder...",file->node->afID);
ShowProgressStateMsg(str);
AFPLUGIN(node)->ShutdownPlayback(file);
FSCloseFile(file);
}
